Middlings-purifier



5 Sheets-Sheet 1.

(No Model.)

B. L. HOTTEL.

MIDDLINGS PURIFIER.

No. 432,876. Patented July 22, 1890.

ATTORNEYS.

(No Model.) 5 Sheets-Sheet 4.

R. L. HOTTEL.

MIDDLINGS PURIFIBR.

No. 432,876. H Patented July 22, 1890.

WITNESSES: INVENTOR."

A BY M g ATTORNEYS.

(No Model.) 5 sheets-sheets.

R. L. 'HOTTEL. MIDDLINGS PURIFIER.

No. 432,876. Patented July 22, 1890.

A T TOR/V15 Y 8.

UNITED STATES PATENT OFFICE.

ROBERT L; HOTTEL, or CEDARVILLE, CALIFORNIA.

MlDDLlNGS-PURIFIER.

SPECIFICATION forming part of Letters recent No. 432,876, dated July 22, 1890.

Application filed August 29, 1389- Serial No. 322,347. (No model.)

' Cedarville, in the county of Modoc and State of California, have invented a new and Im-- proved Middlings-Purifier, of which the following is a full, clear, and exact description.

The object of the invention-is to provide a new and improved middlings-purifier, which is simple and durable in construction and very efiective in operation.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and then pointed out in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of the improvement. Fig. 2 is a sectional side elevation of the same. Fig. 3 is an end elevation of the same. Fig. 4 is a transverse section of the same on the line a: moot Fig. 1. Fig. 5 is a sectional plan view of the improvement on the line 3 y of Fig. 1, and Fig. 6 is a similar view of the same on the line 2 z of Fig. l.

The improved middlings-purifier is provided with a casing A, of suitable construction, and having on one end suitable bearings for carrying the transversely extending shaft B, connected with suitable machinery for imparting a rotary motion to the same.

On the driving-shaft B is secured an eccentric 0, connected by two eccentric-rods C with the transversely-extending rod 0 fastened in the middle of the beam D of the bolt or shaker D, supported on its sides by links D pivoted on the sides of the casing A, as is plainly shown in Fig. 1.

Atone end of the bolt or shaker D, opposite the outlet D is located the feed-hopper E, provided with a fixed side E, slightly inclined, as is plainly shown in Fig. 2, and leadingjonto a transversely-extending roller E on which presses the lower end of a hinged side E pivoted to the inside of one end of the casing A. A spring or springs E hold said hinged side E in contact with the roller E thus regulating the feed of the middlings to be purified and introduced in the hopper E through a spout E arranged on the top.

Directly above the shaker or bolt D are arform on their outsides V-shaped dust-settlin chambers G G G extendin lon itudinally and connected with each other and also at the top with theeXhaust-fan H, of any ap proved construction, and provided with a shaft I-I, carrying on one end a pulley H over which passes a belt H also passing over a pulley H secured on the main driving shaft B, so that when the latter is rotated the said fan H is set in motion.

In the chambers G, G, and G are held endless-carrier belts I, I, and 1 respectively, passing over suitable pulleys secured on the shafts I and 1, extending transversely and mounted to turn in suitable bearings in the sides of the casing A. The carrienbelts I, I, and Iidischarge at their rear ends onto a conveying-screw J, extending transversely and leading into a spout J, discharging on the outside. The conveying-screw J is provided with a shaft J carrying on one outer end a pulley J over which passesan endless belt J also passing over a pulley 1 secured on the shaft 1 previously mentioned, so that when the latter is rotated the several belts I, I, and I are set in motion, and at the same time the conveying-scre-w J rotates, and the dust moved forward by the said belts is transported transversely into the dischargespout J.

On the underside of the bolt or shaker cloth D operates a revolving brush K, mounted to travel transversely and provided at its ends with grooved rollers K, mounted to travel on transversely-extending bars K held in the sides of the casing A. The ends of the brush K are also rigidly connected with endless belts K each passing over pulleys K and K the pulleys K being secured on a shaft K carrying on one outer end a pinion L, meshing into a segmental gearwheel L, mounted to turn on a stud L secured on one end of the casing A. The seg- ICO L pivotally connected by a pitman'L with a crank-pin L formed on one face of a worm-wheel L mounted to turn on one end of the casing A, and driven by a worm L secured on a shaft L extending transversely and mounted to turn in suitable bearings on the end of the casing A. The gear-wheel L is secured on the said shaft L and meshes into a pinion B secured on the shaft B, driven from the main driving-shaft B by a suitable belt and pulleys.

The feed-roller E of the hopper E, as well as the shaft 1 are both driven by an endless belt E passing over a pulley I", on the said shaft 1 and also over a pulley E on the feedroller E The said belt E also passes over a pulley E secured on the shaft L previously 1n entioned,so that when the main shaft B is rotated a rotary motion is imparted to the shaft B, and the latter imparts a rotary motion to the shaft D, which, by the aforesaid connection, turns the feed-roller E and the shaft E so that the several conveying-belts I, I, and I and the conveyer-screw J, are set in motion. When the shaft L is rotated, the worm L slowly turns the worm-wheel L, which, by its connection by the pitman L, imparts an oscillating motion to the segmental gear-wheel L-,whereby the shaft K is turned forward and backward so that the belts K move transversely forward and backward, thereby carrying the brush K transversely under the bolt-cloth D the brush revolving by traveling with its grooved rollers K on the track-rods K The stock on the bolt D, passing through the said bolt-cloth D falls onto the inclined sides of the hopper N, adapted to dischargeinto the longitudinally-extending troughs O 0, adapted to alternately connect with the lower end of the said hopper N by longitudinally-extending gates N. (Plainly shown in Fi 4.

I n tlie troughs O and 0 are arranged the conveying-screwsl and P, respectively, the shafts of which are provided at one outer end with the bevel gear-wheels P meshing into bevel-pinions B secured on the shaft B. hen the latter is rotated, as previously described, the conveying-screws P and P are set in motion, and the stock is conveyed in the troughs O andO, respectively, to one end of the same to be finally discharged in the usual manner. The opening D in the bolt D is adapted to discharge into a spout Q, leading downward at one end of the casing A. The upper end of the spout Q is connected by an aperture Q with the upper parts of the settling-chambers G, G ,and G and gates Q and Q are held adj ustably in the said spout one below the opening Q and the other below the end of the shaker D.

Theoperation is as follows: When the machine is set in motion, the fan H creates a draftin the dust-settling chambers G G G and in the channels F F when their top por= tions F are opened. The air passes into the interior of the casing through the boltcloth D", through the bolt D, and then to the channels F and F. The middlings from the hopper E pass evenly through the hinged side E over the feed-roller E into one end of the bolt or shaker D, which shakes the middlings, and at the same time the current of air passing upward through the bolt separates the stock and lighter particles, which latter are carried upward through the openings F and F into the chambers G, G, and G and from the latter are drawn into the fan H and ejected by the same. The heavier particles settle in the bottoms of the chambers G G G and are carried forward to the conveyer-screw J by the carrying-belts I, I, and 1 As the sides of the channels F and F are inclined, as is plainly shown in Fig. 4, all the particles settle in the bottoms of the chambers G G G and are readily carried forward by the belts I, I, and 1 respectively. The brush K, traveling transversely on the underside of the boltcloth D keeps the latter open, so that the stock can readily pass through the bolt-cloth into the hopper N, and from the latter into either of the troughs O or 0, according to the position of the gate N. The stock is moved forward by the conveyer-screw P orP in the said trough O orO, respectively. The tailings from the shaker or bolt D pass through the end D into the spout Q, and from the latter to the outside. The action of the fan H also produces an upward current .of air in the spout Q, so that the tailings of the middlings passing into the .said spout from the shaker D are aspirated.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The combination, with the casing having a transverse hopper across one end, a trans- I verse conveyer across its opposite end, and a shaker or bolt upon which said hopper discharges, of the /\-shape imperforate channels or chambers .F F, extending from the inner well of the hopper to the said conveyer and abutting at their lower inner longitudinal edges to form the central V-shape dustsettling chamber, the opposite lower longitudinal edges of the channels F F engaging the side walls of the casing and forming dustsettling chambers G G parallel with chamber G, valved openings along the apexes of the channels F F and longitudinal conveyers in the bottoms of the dust-settling chambers and delivering to the said transverse conveyer, and the suction blower above said channels or chambers, substantially as set forth.

ROBERT L. HOTTEL. 

